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Third-Largest Asteroid Impact Crater Discovered In South Australia
2013-02-17 09:34:13

A massive asteroid that crashed into Earth left behind a large impact crater in Australia and changed the entire landscape of the planet.


Word of the Day
ecotone
  • A transitional zone between two communities containing the characteristic species of each.
The word 'ecotone' comes 'eco-' plus a Greek root meaning 'tension'.